FREQUENCY TRANSFORMERS - MEDIUM POWER TRANSFORMERS

As FREQUENCY TRANSFORMERS, we offer fast quotes, flexible planning, and on-time delivery for oil-immersed and dry-type medium power transformers. Our IEC 60076-compliant designs, with low losses and high short-circuit resistance, ensure reliable supply for EPCs, importers, and operators.

Why FREQUENCY TRANSFORMERS?

• Standard compliance: IEC/EN 60076 series, EcoDesign efficiency requirements
• Speed ​​and transparency: 24–48 hour preliminary quote, clear delivery schedule, scheduled shipment
• Reliability: Low no-load/load loss, low noise, high surge and short-circuit resistance
• Documentation: Type/routine test reports, CE/CoC, nameplate, and project drawings
• Logistics: Europe and Balkan-focused deliveries, Incoterms-compliant options

Product Scope:

• Oil-immersed medium power transformers: Hermetic or with expansion tank (ONAN/ONAF/ODAF)
• Dry-type (cast resin/VPI) medium power transformers: Indoor/critical facility applications
• Step-up/step-down transformers: Solar power plants/windows power stations, grid intermediate voltages
• Kiosk/container transformer substations: RMU + Transformer + LV panel integrated packages
• Special applications: BESS/PCS compatible, low-harmonic and low-noise series

Technical Specifications and Options:

• Power range: 2.5–40 MVA (higher powers possible on a project basis)
• Voltage levels: MV 6–36 kV; HV side project-based (52–154 kV typical); LV 0.4–1 kV
• Cooling: ONAN/ONAF/ODAF (oil-immersed); AN/AF (dry-type)
• Oil: Mineral or natural ester (FR3) – environmental and fire safety
• Insulation: High impact resistance; BIL/LI levels as required by project
• Connection groups: Suitable for topologies such as Dyn11, YNd1, YNyn0, etc.
• Loss classes: Low-loss options compatible with EU/EcoDesign
• Accessories: Buchholz, pressure relay, oil/level/temperature indicators, CT/VT, fan groups
• Monitoring: PT100/NTC, temperature relay, dry contacts; Interface for online monitoring
• Enclosure/coating: IP23–IP55; C3–C5-M corrosion-rated paint; seismic design option
• Tests: Routine, type, and dielectric tests; dry-type partial discharge; customer-tested FAT

Application Areas:

• Solar power plants/wind power plants: Step-up station transformers, station/load centers
• Grid and distribution companies: MV/HV intermediate voltage transformations
• Energy storage (BESS) and microgrids: PCS-compatible designs
• Heavy industry, data centers, hospitals, mining, and infrastructure projects

Engineering and Integration:

• Optimized impedance and thermal design for short-circuit and dynamic loads
• Harmonic and thermal resistance in high THDi applications (inverter/PCS)
• SCADA/RTU integration: Dry contacts, monitoring modules (panel (via)
• Support for protection coordination, voltage drop, and grounding calculations
• Field logistics: Modular transport, lifting points, rapid commissioning procedures

Benefits for importers and EPCs:

• Fast quotation and technical clarification list in 24–48 hours
• Country-specific nameplate, CE/CoC, single-line, and assembly drawings
• EXW, FCA, CPT, DAP delivery options; customs and packaging support
• Long-term price stability, flexible order quantities, and synchronized shipping

Frequently Asked Questions:

• Delivery times? 6–14 weeks depending on power/specifications; part-stock options possible.
• Oil- or dry-type? Let's choose together based on fire safety, installation location, and TCO.
• Noise target? We offer low dB(A) designs that comply with local regulations.
• Which tests? Routine/type/dielectric tests in accordance with IEC 60076; customer-witnessed FAT.

Call to Action: Contact us with a single-line diagram, load profile, and network parameters for your medium-power transformer needs. Let us secure your project with a fast quote, clear deadlines, and reliable delivery.